UL817最新标准

DocumentWasDownloadedByAiLinLiForUseByHUIZHOUHENGWINGTECHNOLOGYCO51057:4/1/2011-7:43PMULCOPYRIGHTEDMATERIAL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULSubject817April1,2011SUMMARYOFTOPICSThefollowingchangesinrequirementstotheStandardforCordSetsandPower-SupplyCords,UL817,arebeingproposedforpreliminaryreviewandcommentonly:1.ForPreliminaryReviewOnly:1.TheProposedBinationalTwelfthEditionoftheStandardforCordSetsandPower-SupplyCordsHarmonizingtheRequirementsoftheStandardforCordSetsandPower-SupplyCords,UL817,andCordSetsandPower-SupplyCords;GeneralInstructionNo.1-2,CSAC22.2No.21COMMENTSDUE:June1,2011Thisproposalisforreviewandcommentonly(noballotatthistime).PleasenotethatcommentsonapreliminaryreviewdocumentwillnotreceivearesponsefromtheproposalauthorthroughCSDS.Instead,theproposalauthorwillbeaskedtoreviewthecommentsandadjusttheproposalsand/orsupportingrationaleastheauthordeterminestobeappropriate.ThepreliminaryreviewprocessisaninformalmechanismthatprovidesauthorswiththeopportunitytorefinetheirproposalsbeforetheyadvancetothenextstageinUL’sstandardsdevelopmentprocess.Insomecases,theauthoroftheproposalsmaychoosetodiscontinuethem.Inthiscase,theauthorneednotdoanythingafterpreliminaryreviewhasended.Normally,thenextstepintheprocessisthemoreformalSTPballotandstakeholderreviewprocess.OnlycommentspostedduringtheSTPballotandstakeholderreviewprocesswillbeprovidedwitharesponseinCSDS.Foryourconvenienceinreview,proposedadditionstoexistingrequirementsareshownunderlinedandproposeddeletionsareshownlined-out.1.ForPreliminaryReviewOnly:1.TheProposedBinationalTwelfthEditionoftheStandardforCordSetsandPower-SupplyCordsHarmonizingtheRequirementsoftheStandardforCordSetsandPower-SupplyCords,UL817,andCordSetsandPower-SupplyCords;GeneralInstructionNo.1-2,CSAC22.2No.21RATIONALEProposalsubmittedby:ChrisHenderson,THSCSecretary,onBehalfoftheTechnicalHarmonizationSubcommittee(THSC)20,CordSetsTheCANENA(ConsejodeArmonizaciondeNormasElectrotecnicasdeNorteAmerica)TechnicalHarmonizationSubcommittee(THSC)20,CordSets,hascompleteditsdevelopmentofaproposedBinationalStandardtoharmonizerequirementsoftheEleventhEditionoftheStandardforCordSetsandPower-SupplyCords,UL817,withCordSetsandPowerSupplyCords-EighthEdition;GeneralInstructionNo.1-2,CSAC22.2No.21.Ifadopted,itisexpectedthatthisBinationalStandardwouldbecometheTwelfthEditionofUL817.Thelayout,organization,andnumberingsystemhavebeensubstantiallyrevised.TheunitsofmeasurementhavebeenrevisedtostatetheSI(metric)dimensionsfirstfollowedbyinch-poundunitsinparentheses.FiguresandTableshavebeennumberedconsecutivelyandrelocatedtotheendoftheStandard.DocumentWasDownloadedByAiLinLiForUseByHUIZHOUHENGWINGTECHNOLOGYCO51057:4/1/2011-7:43PMULCOPYRIGHTEDMATERIAL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULThefollowingtablehighlightsthesignificanttechnicalchangestotheexistingrequirementsofUL817:ParagraphinProposedNewEditionProposedChangeRationaleVariousNationaldifferences-AdditionofsuperscriptsandexplanatorynotesAsstatedin3.3,incaseswhereproducttypesdonotapplytobothcountries,anationaldifferenceisindicatedbytheuseofsuperscripts.Incaseswhererequirementsorconstructionspecificationsdonotapplytobothcountries,nationaldifferencesareindicatedbyexplanatorynotes.VariousEditorialClarificationofvariousrequirementsthatpreviouslywereunclearorconfusing.VariousLinefittingtoPlugClarificationandconsistencywithotherULstandards.VariousLoadfittingtoConnectorClarificationandconsistencywithotherULstandards.VariousNon-DetachablePower-SupplytoPower-SupplycordHarmonizeproductnameswithCSA.VariousDetachablePower-SupplyCordtoCordSetHarmonizeproductnameswithCSA.N/AThedefinitionandrequirementsconcerningantennapower-supplycordshavebeendeleted.Theseproductsarecoveredbytheend-productstandard.N/AAllrequirementsconcerningcordsetsandpower-supplycordsintendedforusewithatelevisionreceiverhavebeendeleted.Theseproductsarecoveredbytheend-productstandard.5.3.2.1Projections–Requirementsrevisedtonolongerallowprojections.ToaccountforthedifferenceinconstructionsbetweenproductscoveredbyUL817andUL2438,theStandardforOutdoorSeasonal-UseCordConnectedWiringDevicesDefinitionsand5.3.6HospitalGradeConnectors–AdefinitionandrequirementsforHospitalGradeconnectorshavebeenadded.TheNationalElectricalCode(NEC),ANSI/NFPA-70,doesnotprohibitthisconstructionandCSAC22.2No.21currentlycoverssuchproducts.5.1.2Flammability–Flammabilityrequirementshavebeenadded.Reflectscurrentpractice.5.1.3AccessibilityofLiveParts–Additionofrequirementsfortheaccessibilityofliveparts.Reflectscurrentpractice.5.1.4ConnectiontoFittings–Requirementshavebeenaddedforconnectingtheconductortothefitting.Topermitotherformsofconnectingtheconductortotheterminalofthefittingifthemechanicalfeaturesandcurrentcarryingcapabilityareequivalenttosoldering,weldingorcrimpingasdeterminedbyspecifiedtesting.5.1.6TreatmentofCord-ConductorCoverings–Requirementshavebeenadded.ToharmonizewithCanadianrequirementsandprovideanadditionalsafetyprecautiontorequiresuitablemeanstobeprovidedtopreventfrayingorslippingof